CHICAGO, IL - OCTOBER 09: Ejegayehu Dibaba of Ethiopia participates in the Bank of America Chicago Marathon on October 9, 2011 in Chicago, Illinois. (Photo by Tasos Katopodis/Getty Images)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)

Chicago Marathon

OCTOBER 9TH, 2011: Thousands of marathon runners from all over the world filled the streets on Addison and Broadway on the North Side at mile 7.75 out of the total of 26.2 miles for the Bank Of America Chicago Marathon. (credit: Steve Hardy/CBS Local)